Winding convolute can bodies

ABSTRACT

A machine for convolutely winding container bodies having cross sections other than cylindrical comprising a winding mandrel for receiving a lamina and winding the same thereon, together with structure for advancing the wound lamina lengthwise along the mandrel to a position for applying pressure to the wound lamina while disposed on the mandrel and consisting of a frame rotating on an axis corresponding to the axis of rotation of the mandrel. Structure is provided for rotating the frame in the same direction as the winding mandrel but at a lower speed, so that &#39;&#39;&#39;&#39;fly-off&#39;&#39;&#39;&#39; of the pressure applying means is prevented.

United States Patent 1191 Smith Dec. 16, 1975 [5 WINDING CONVOLUTE CANBODIES 1125,1320 771965 Macchione 93/94 PS [75] Inventor: Curtis J.Smith, Fenton, Mo.

Primary Examiner-James F. Coan [73] Ass1gnee: Container Corporation ofAmerica, Attorney, A or Firm-Carpenter, Ostis &

Chicago, Ill. Lindberg [22] Filed: Aug. 12, 1974 21 Appl. No.: 496,759[57] 1 ABSTRACT A machine for convolutely winding container bodieshaving cross sections other than cylindrical comprising [52] US. Cl.293/81 R; 93/83; 93/94 PS a winding mandrel for receiving a lamina d i di[51] Cl. B31C l/00 the same thereon together with Structure for advanc[58] 0f Search 93/81 81 94 ing the wound lamina lengthwise along themandrel to 93/77 77 CD83 94 R a position for applying pressure to thewound lamina 5 while disposed on the mandrel and consisting of a 6]References Clted frame rotating on an axis corresponding to the axis ofU TE STATES A ENTS rotation of the mandrel. Structure is provided forro- 1,814,697 7/1931 Hollmann 93/83 x tating h am n th same direction asthe winding 2,259,577 10/1941 Morgan et al... 93/81 R mandrel but at alower speed, so that fly-off of the 3,044,372 7/1962 Humphreys 1 93/83 Xre ure a lying means is prevented. 3,280,707 lO/l966 Cappella 93/81 R3,482,490 12/1969 Thomas 93/94 PS 80mm, 1 Drawmg Flame 1 1Q 22 23 f E729 17 lg 21 i 49 11 1 2 C 14 24 EF 56 18 f c 1 50A a 42 5s 1s a 19 z p16 3 54 I z 1 WM 1 I9 23 n I S L 6 l LA 22 15 [I 53 49 s F5 41 54 FA CBcBIl I 42 44 ,36 1| 3e 39 so 33 34 l' l, 47 501 I SOL 46 US. Patent Dec.16, 1975 3,926,098

SOL

WINDING CONVOLUTE CAN BODIES THE PRIOR ART The prior art relating tomechanism of the general type is best exemplified in Cappella US. Pat.No. 3,280,707 developed in a search. In Cappella there is taught the useof a first mandrel which is operated at a high speed for the convolutewinding of can bodies having rectangular cross sections for example. Theso wound can body is transferred onto a second mandrel rotating at alower speed, and the can bodies disposed thereon are subjected topressure applied to the laminae thereof. In the structure according tothe Cappella there must perforce be provided structure for synchronizingthe slower rotating mandrel with the faster rotating one, so thattransfer between the mandrels without injury to the can bodies can behad.

According to Cappella, the container body is rotated at top speed duringits winding operation and at a lesser speed during the terminal endlay-down operation. This is effected by providing a split or two partmandrel which extends through a plurality of stations in the apparatusand which comprises a winding mandrel which is rotated at top speed anda continuing lay-down mandrel which is rotated at a lesser speed,preferably about half of the winding speed.

In such an apparatus, the container body is transferred from one part ofthe mandrel to the other part for the different operations. Hence theapparatus may be kept operating at top or winding speed with the bodybeing wound at one station at this top speed while a lay-down operationis simultaneously being performed at a reduced speed on a previouslywound body at a subsequent station.

Cappella thus makes use of winding mandrels turning at different speeds,something unnecessary by the structure according to applicant.

SUMMARY OF THE INVENTION ing means.

The structure according to the present invention enables a label laminato be applied to the container body, the application of said labellamina being accomplished at a station where pressure is applied to thecontainer body.

THE DRAWING The sole FIGURE is an isometric schematic view showing amachine for convolutely winding container bodies, said machine havingthe improvements according to the present invention embodied therein.

The improved machine according to the present invention, and forcarrying out a method according to same, is referred to generally by thereference numberal 10. The machine includes a first station 11 having awinding mandrel WM thereat for winding a lamina L thereon, the length oflamina L being determined by a shear indicated generally by referencecharacter S. At station 11 winding mandrel WM customarily hadincorporated therewith suitable structure for engaging the leading endof lamina L and thereafter winding same therearound. Such lamina L iscustomarily fed past structure, not shown, for applying a film ofadhesive thereto, such structure being well known in the art.

At the conclusion of the winding of lamina L, the same is moved to asecond station 12 for application thereto of pressure for firmly bondingthe laminar plies. In the case where the outer surface of the containerbody CB has an adhesive coating thereon, the body will be additionallycovered by an additional lamina such as a conventional label describingthe contents of the completed container.

The container body CB which may be referred to herein as a stick thereofis moved from station 11 to station 12 by means of a stripper collar 16fast to winding mandrel WM, the latter having a spline connection, notshown, with a driving shaft 13 so that translative movement of windingmandrel WM may be accomplished for movement of the stick from station 11to station 12. Movement in the return direction of the mandrel 1 1 islimited by a stop collar 14 fast on driving shaft 13, and movement ofthe stripping collar 16 may be accomplished by structure well known inthe art, and forming no part of the present invention.

At the conclusion of the stripping operation, when the stick ofcontainer bodies CB is moved to station 12, the aforesaid operationstaking place at station 11 are repeated.

Structure is provided for compressing the wound lamina of the containerstick or body CB by pressure against the sides thereof, and in suchfashion that flyofi of said pressure applying structure is prevented. Tothis end there is provided a pair of longitudinally spaced standards 15,each supporting and end frame EF of a cage C. Each of such standardsafl'ords a support in an opening therein for each end from EF. Framemembers EF are held together for rotation in standards 15 as a unit byrock shafts 17. Frame members EF and rock shafts 17 are disposed atstation 12.

Structure is provided for rotating compressing structure along an axiscoincident with the axis of rotation of mandrel WM in the same directionbut at a lower speed.

To this end the lamina compressing structure is driven from shaft 13 bymeans of a gear train 24, 26, 27, gear 27 being fast on one end of ashaft 28 extending in spaced parallel relationship to the axis ofmandrel WM and having a timing pulley 29 at the other end thereof. Atiming belt 31 is trained between pulley 29 and a timing pulley 32integral with one end frame EF of cage C.

Each of the rock shafts 17 supports a pressure roller 18 mounted in aclevis 19 at the end of a clevis arm 21 having a hub 22 fast on shaft17. A torsion spring 23 mounted on rock shaft 17 is strained to urgepressure roller 18 toward container body CB on winding mandrel WM.

Since the cage C rotates in the same direction as mandrel WM, but at alower speed, the difference in the two speeds lessens the fly-offtendency of rollers 18 against mandrel WM.

Structure is provided for placing a single label lamina LA against thestick which has a glue coating on the outer side thereof. Label laminaLA is disposed in a 3 stack S thereof supported on a feed shelf FS. Itis moved to a feeding and retracted position by a fluid operatedcylinder 33 supplied with motive fluid by lines 34 and 36. The movementof feed shelf FS is under control of a solenoid operated valve 37.

Valve 37 is controlled in its operation by a timing shaft 38 having atiming pulley 39 fast to one end thereof, shaft 38 being turned by atiming belt 41 reeved around a timing sprocket 42 fast on the shaft 13driving mandrel WM.

Spaced cams 43 and 44, mounted on timing shaft 38 respectively, operateswitches 46 and 47 connected in circuit elements 48, 48 and to solenoidvalve 37 to control the feed and return movement of feed shelf FS.

Structure is provided to move the pressure rollers 18 out of contactwith the container body CB at the time of application of a label laminaLA thereto. Each of the rock shafts has a cam follower 49 fast to an endthereof and cooperating with a cam 51 secured to one of the standards15. Cam 51 has an entering ramp 52 to give smooth rocking movement torock shaft 17 in a direction to raise pressure roller 18 from containerbody CB at the instant feed shelf FS raises to place the top most levellamina LA against body CB, the pressure roller returning to pressureappling condition thereafter. It will be remembered that the surface ofbody CB is glue coated to adhere lamina LA.

At the conclusion of the operations the bodies CB move to a shaperstation 50 having a finish arbor Fa receiving the body CB. Arbor FA doesnot rotate but is arranged to receive a body CB when mandrel WMregisters with FA and bodies CB move along mandrel WM by strippingcollar 16.

Shaper station 50 has an opening 50A. Such shaping devices includepedestals 56 extending radially in the opening 50A at right angles toeach other and having spring-biased slides 53 therein terminating inshaping shoes 54, each engaging a side of body CB.

What is claimed is:

1. In a machine for convolutely winding a container body other than oneof purely cylindrical cross section from laminar plies;

a. a winding mandrel for receiving an end of a lamina and convolutelywinding said lamina thereon;

b. means for advancing said wound lamina along said mandrel to aposition for application of pressure against said wound lamina and forapplying a second lamina to said wound lamina;

0. means for applying pressure to said wound lamina while the same isdisposed on said mandrel throughout rotation thereof comprising;

i a frame rotating along an axis coincident with the axis of rotation ofsaid winding mandrel;

ii means for rotating said frame in the same direction as said-windingmandrel but at a speed lower than the speed of said winding mandrel;

iii pressure applying mechanism mounted on said frame including membersin contact with said second lamina throughout complete rotation of saidcontainer body and the lamina thereof.

2. In a machine according to claim 1 wherein means are included forapplying a further lamina to said wound lamina at the conclusion ofapplying pressure to said wound lamina.

3. In a machine according to claim 2 wherein said further lamina arearranged as a stack thereof movable between lamina applying andretracted positions.

4. The invention according to claim 3 wherein said pressure applyingmechanism is moved out of contact with said wound lamina duringapplication of a further lamina to said wound lamina.

5. In a machine for convolutely winding a container body other than oneof purely cylindrical cross section from laminar plies:

a. a winding mandrel for receiving an end of a lamina and convolutelywinding said lamina thereon;

b. means for advancing said wound lamina along said mandrel to aposition for application of pressure against said wound lamina;

c. means for applying pressure to said wound lamina while the same isdisposed on said mandrel throughout rotation thereof comprising;

i. a frame rotating along an axis coincident with the axis of rotationof said winding mandrel;

ii. means for rotating said frame in the same direction as said windingmandrel but at a speed lower than the speed of said winding mandrel;

iii. pressure applying mechanism mounted on said frame including membersin contact with said lamina throughout complete rotation of saidconsecond lamina are arranged as a stack thereof movable between laminaapplying and retracted positions.

8. The invention according to claim 7 wherein said pressure applyingmechanism is moved out of contact with said wound lamina duringapplication of said second lamina to said wound lamina.

1. In a machine for convolutely winding a container body other than oneof purely cylindrical cross section from laminar plies; a. a windingmandrel for receiving an end of a lamina and convolutely winding saidlamina thereon; b. means for advancing said wound lamina along saidmandrel to a position for application of pressure against said woundlamina and for applying a second lamina to said wound lamina; c. meansfor applying pressure to said wound lamina while the same is disposed onsaid mandrel throughout rotation thereof comprising; i a frame rotatingalong an axis coincident with the axis of rotation of said windingmandrel; ii means for rotating said frame in the same direction as saidwinding mandrel but at a speed lower than the speed of said windingmandrel; iii pressure applying mechanism mounted on said frame includingmembers in contact with said second lamina throughout complete rotationof said container body and the lamina thereof.
 2. In a machine accordingto claim 1 wherein means are included for applying a further lamina tosaid wound lamina at the conclusion of applying pressure to said woundlamina.
 3. In a machine according to claim 2 wherein said further laminaare arranged as a stack thereof movable between lamina applying andretracted positions.
 4. The invention according to claim 3 wherein saidpressure applying mechanism is moved out of contact with said woundlamina during application of a further lamina to said wound lamina. 5.In a machine for convolutely winding a container body other than one ofpurely cylindrical cross section from laminar plies: a. a windingmandrel for receiving an end of a lamina and convolutely winding saidlamina thereon; b. means for advancing said wound lamina along saidmandrel to a position for application of pressure against said woundlamina; c. means for applying pressure to said wound lamina while thesame is disposed on said mandrel throughout rotation thereof comprising;i. a frame rotating along an axis coincident with the axis of rotationof said winding mandrel; ii. means for rotating said frame in the samedirection as said winding mandrel but at a speed lowEr than the speed ofsaid winding mandrel; iii. pressure applying mechanism mounted on saidframe including members in contact with said lamina throughout completerotation of said container body and the lamina thereof.
 6. In a machineaccording to claim 5 wherein means are included for applying a secondlamina to said wound lamina at the conclusion of applying pressure tosaid wound lamina.
 7. In a machine according to claim 6 wherein saidsecond lamina are arranged as a stack thereof movable between laminaapplying and retracted positions.
 8. The invention according to claim 7wherein said pressure applying mechanism is moved out of contact withsaid wound lamina during application of said second lamina to said woundlamina.